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Simplifying 0 = 1 + 2cos(2x) Remove parenthesis around (2x) 0 = 1 + 2cos * 2x Reorder the terms for easier multiplication: 0 = 1 + 2 * 2cos * x Multiply 2 * 2 0 = 1 + 4cos * x Multiply cos * x 0 = 1 + 4cosx Solving 0 = 1 + 4cosx Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-4cosx' to each side of the equation. 0 + -4cosx = 1 + 4cosx + -4cosx Remove the zero: -4cosx = 1 + 4cosx + -4cosx Combine like terms: 4cosx + -4cosx = 0 -4cosx = 1 + 0 -4cosx = 1 Divide each side by '-4osx'. c = -0.25o-1s-1x-1 Simplifying c = -0.25o-1s-1x-1
| -13/6/(-28/15) | | -3(-7-b)=1b+23 | | 0.05x+0.04=0.02x+0.16 | | -13/6-28/15 | | 0.3x+18=0.25x+20 | | -3-6x=69 | | -0.6x=0.3x+1.8 | | -0.2x-0.2=0.5x-4.4 | | 0.1x-0.9=0.8 | | 0.03x=0.08+0.07x | | 0.02x=-3.12+0.8x | | 0.06x=0.42-0.01x | | -0.04x-0.04=0.02x-0.34 | | 7x+5=4x-19 | | 0.2x+0.3=-0.4x+0.9 | | (1-x/500)^2 | | X/-2=1 | | -0.3x-0.2=-0.1x-1.4 | | 1000-3x=730 | | 1000(1-x/500)^2/x | | (100x+200x)=1200 | | 9e^2x-26=280 | | 5(2+x)=25 | | 2(6x-4)=11x-7 | | -9x=-(11x+16) | | 137x-19=1 | | 60x-1000=700 | | 7(5-x)=21 | | x^2+2x+1=k(x+2)equal | | (5-2x)(3x+1)=0 | | 5(x-2)=3(3x+6) | | 3(2x+1)=7(x+1) |